What are the causes of high temperature in a car radiator?
2 Answers
The causes of high temperature in a car radiator are: 1. Radiator leakage or lack of coolant, preventing the engine heat from dissipating and the temperature from being reduced in time; 2. Deterioration of the coolant, leading to a decrease in boiling point parameters, affecting the cooling effect or reducing anti-rust quality, causing blockages in the radiator circulation pipes; 3. High ambient temperature, air conditioning overload operation, or radiator component failure; 4. Electronic fan failure, resulting in insufficient fan speed. The car radiator, also known as the heat exchanger, is a key component in the car's cooling system. Its function is to dissipate heat. The coolant absorbs heat in the water jacket, flows to the radiator to dissipate the heat, and then returns to the water jacket in a continuous cycle.
That day when I was driving to the countryside, the temperature gauge suddenly turned red, which scared me so much that I immediately pulled over. Upon opening the hood, I found the coolant reservoir was completely empty, and the overflow tank was still bubbling. The hoses were too hot to touch, and the radiator fan wasn't working. Later, the inspection revealed that the thermostat was stuck, blocking the coolant circulation, just like a blocked blood vessel. Aging and leaking hoses can also cause overheating, as rubber hoses tend to crack over time. If the belt breaks, the water pump won't work either. This kind of issue is most common in summer, so I recommend checking the coolant level before setting off. If the fan isn't working, shut off the engine immediately—forcing it to run could burn through the engine head gasket.
